Thomas Cass was born about 1821 in Farmly, Queen, Ireland. He came to America with his parent, who settled in the North End of Boston. Cass attended a local school before learning the trade of currier. He joined his father in business. Cass was a member of the Columbian Artillery and was Captain of Company B.
When the Civil War started Cass became a Colonel in the 9th Massachusetts Infantry on June 11th 1861. The 9th was mostly made up of Irish Americans and started off bivouacked at Boston’s Faneuil Hall. They moved to the Washington, DC area on June 30th 1861, where they built forts for the protection of the city and performed picket duty. Cass and the 9th saw some of their first combat at the Battle of Mechanicsville, and Gaines Mill.
On July 1st 1862 at the Battle of Malvern Hill Cass received a head wound. Following the battle Cass was moved to his home in Boston, MA, where he died from his wounds July 12th 1862. He is buried at the Mount Auburn Cemetery, Boston, MA.
If you are looking for more information, take a look at STATUE OF COL. THOMAS CASS.; Unveiled at Boston Yesterday to Replace One Removed